CN211148396U - Online measuring device for water content of crude oil - Google Patents
Online measuring device for water content of crude oil Download PDFInfo
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- CN211148396U CN211148396U CN201921251433.9U CN201921251433U CN211148396U CN 211148396 U CN211148396 U CN 211148396U CN 201921251433 U CN201921251433 U CN 201921251433U CN 211148396 U CN211148396 U CN 211148396U
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Abstract
The utility model discloses an online measuring device for the water content of crude oil, which comprises a measuring cylinder, an oil inlet pipe, an oil outlet pipe and a magnetostrictive displacement sensor, wherein the upper part of the measuring cylinder is provided with an overflow cylinder, a measuring rod of the magnetostrictive displacement sensor is inserted from the tops of the measuring cylinder and the overflow cylinder, and the measuring rod is provided with a movable first floater and a movable second floater; the overflow cylinder is connected with an overflow pipe, and the overflow pipe is connected with an oil delivery pipe; the measuring cylinder is provided with a washing pipe and a positioning switch. The utility model discloses in impressing a measuring cylinder with crude oil, carry out the principle of accurate measurement to the macroscopic volume of the oil after the separation and water, carry out the moisture content and measure, be different from only carrying out the moisture content measurement from the differentiation principle of the microcosmic characteristic of crude oil, gaseous phase significantly reduces to measuring result's influence, simple structure, simple to operate need not the crude oil density and the water density of confirming this well earlier, measures fast.
Description
Technical Field
The utility model relates to an oil field well drilling detection area, concretely relates to crude oil moisture content on-line measuring device.
Background
With the technical development of oil exploitation in China, the on-line measurement technology of the water content of crude oil is rapidly developed and widely applied, so that the measurement precision and the measurement speed are greatly improved, and the automation level of oil field construction reaches a new level. The more currently used techniques are densitometry and capacitive, which in use expose a number of disadvantages, as analyzed by 1) densitometry: the measurement principle is that the density of the crude oil is measured to measure the water content of the crude oil according to the principle that the water content of the crude oil is different and the density of the crude oil is different. Since the density of pure oil in crude oil and the density of pure water contained therein are fixed values that are known, the density of a mixed liquid thereof is a fixed value in combination of different oil and water contents. In this method, the density of the oil-water mixture discharged from the two-phase separator is continuously measured by a vibrating tube densitometer, and the water content of the crude oil is calculated. The density value of pure oil and water in crude oil produced by an oil well in the method is difficult to fix; the temperature and pressure compensation of the densimeter is not easy to solve; the sampling problem of the tested medium; the gas in the crude oil liquid reduces the density of the mixed liquid to cause low water content, and the sand increases the density to cause high water content. 2) A capacitance method: the measurement principle is as follows: the water content of the crude oil is measured by utilizing the principle that the dielectric constants of water and oil are greatly different, the water content can be greatly changed due to the small change of the water content, the change of the dielectric constant of the water-containing crude oil can be reflected by the change of the capacitance value, and the water content can be measured by measuring the capacitance value. The method has small range and poor adjustability, and is only suitable for crude oil with the water content of less than 30 percent.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can carry out oil-water separation fast in the pipeline, highly do quick accurate measurement to oil level and surface of water, the high on-line measuring device of moisture content measurement accuracy.
In order to achieve the above purpose, the present invention is realized by the following technical solutions:
the device for measuring the water content of the crude oil on line comprises a measuring cylinder, an oil inlet pipe, an oil outlet pipe and a magnetostrictive displacement sensor, wherein the magnetostrictive displacement sensor comprises a measuring rod and a signal transmitter at the end part of the measuring rod; the two ends of the oil inlet pipe are respectively connected with an oil delivery pipe and a measuring cylinder; the oil outlet pipe is connected to the bottom of the measuring cylinder; the upper part of the measuring cylinder is provided with an overflow cylinder, the measuring rod is inserted from the top ends of the measuring cylinder and the overflow cylinder, and the measuring rod is provided with a movable first floater and a movable second floater; the first float is below the second float; the first floater and the second floater have magnetism; the overflow cylinder is connected with an overflow pipe, and the overflow pipe is connected with the oil delivery pipe; the measuring cylinder is provided with a washing pipe, and the measuring cylinder is provided with a positioning switch.
Furthermore, a set top box is arranged outside the signal transmitter, and a flange plate is arranged between the set top box and the top of the overflow cylinder.
Furthermore, all be equipped with the solenoid valve on advancing oil pipe, play oil pipe, overflow pipe and the flushing pipe.
Furthermore, the overflow cylinder wraps the measuring cylinder to form an overflow cavity, and the lower bottom surface of the overflow cylinder is an inclined surface.
Furthermore, the flushing pipe is arranged below the inclined plane of the overflow cylinder and communicated with the side face of the measuring cylinder.
Furthermore, the positioning switch comprises an electromagnetic valve and a supporting rod at the end part of the electromagnetic valve, a spring is arranged between the electromagnetic valve and the supporting rod, the spring is fixedly connected with one end of the supporting rod, and the other end of the supporting rod is in contact connection with the measuring rod.
The utility model discloses crude oil moisture content on-line measuring device, its beneficial effect lies in:
(1) the utility model discloses utilize crude oil and water to have the characteristic of different density, take the crude oil that makes in the pipeline to carry out quick oil-water separation when the measuring cylinder of specific height to highly do quick accurate measurement with oil level and the surface of water through first float, second float and magnetostrictive displacement sensor, the surface of water height then is the moisture content of crude oil with the high ratio of measuring the cylinder. Simple structure and convenient installation.
(2) The crude oil density and the water containing density of the well are not required to be determined firstly, and the measurement is rapid.
(3) The method is different from the method of measuring the water content only by the distinguishing principle of the microcosmic characteristics of the crude oil (such as density, dielectric constant, oxygen atom content in carbon atom water in oil, different absorption rate of water content to different wavelength energy and the like). The influence of gas on the measurement results is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
the device comprises a measuring cylinder 1, an oil inlet pipe 2, an oil outlet pipe 3, a signal transmitter 4, an overflow cylinder 5, a first floater 6, a second floater 7, an overflow pipe 8, an oil delivery pipe 9, a flushing pipe 10, a positioning switch 11, a set top box 12, a flange plate 13, a first electromagnetic valve 14, a second electromagnetic valve 15, a third electromagnetic valve 16, a fourth electromagnetic valve 17, a supporting rod 18 and a measuring rod 19.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
An on-line measuring device for water content of crude oil is shown in figure 1 and comprises a measuring cylinder 1, an oil inlet pipe 2, an oil outlet pipe and a magnetostrictive displacement sensor, wherein the magnetostrictive displacement sensor comprises a measuring rod 19 and a signal transmitter 4 arranged at the end part of the measuring rod 19; a set top box 12 is arranged outside the signal transmitter 4, and two ends of the oil inlet pipe 2 are respectively connected with the oil delivery pipe 9 and the measuring cylinder 1; the oil outlet pipe 3 is connected to the bottom of the measuring cylinder 1; an overflow cylinder 5 is arranged at the upper part of the measuring cylinder 1, the overflow cylinder 5 wraps the measuring cylinder 1 to form an overflow cavity, the lower bottom surface of the overflow cylinder 5 is an inclined surface, and a flange 13 is arranged between the set top box 12 and the top of the overflow cylinder 5; the measuring rod 19 is inserted from the top ends of the measuring cylinder 1 and the overflow cylinder 5, and the measuring rod 19 is provided with a movable first floater 6 and a movable second floater 7; the first float 6 is below the second float 7; the first float 6 and the second float 7 have magnetism; the overflow cylinder 5 is connected with an overflow pipe 8, and the overflow pipe 8 is connected with the oil delivery pipe 9; the measuring cylinder 1 is provided with a flushing pipe 10, the flushing pipe 10 is arranged below the inclined plane of the overflow cylinder 5, and the flushing pipe 10 is communicated with the side face of the measuring cylinder 1. The oil inlet pipe 2, the oil outlet pipe 3, the overflow pipe 8 and the flushing pipe 10 are all provided with electromagnetic valves; a positioning switch 11 is arranged on the measuring cylinder 1; the positioning switch 11 comprises an electromagnetic valve and a supporting rod 18 at the end part of the electromagnetic valve, a spring is arranged between the electromagnetic valve and the supporting rod 18, the spring is fixedly connected with one end of the supporting rod 18, and the other end of the supporting rod 18 is in contact connection with a measuring rod 19.
The diameter and the height of a measuring cylinder 1 in the device are set specific values, the main part of the device is an opening measuring cylinder 1 with a certain diameter and height (such as the diameter phi 150mm and the height 1000mm), a dehydration device, namely an oil-water separation device, is additionally arranged outside the measuring cylinder 1 and can adopt an electric field, a magnetic field, temperature rise, ultrasonic waves and the like and is connected with an oil pipeline 9 in parallel according to a figure, electromagnetic valves of a first electromagnetic valve 14 to a fourth electromagnetic valve 17 and a positioning switch 11 are all in a closed state, a first floater 6 and a second floater 7 are arranged at the bottom of the measuring cylinder 1, and because the electromagnetic valves of the positioning switch 11 are closed and are not electrified, a spring is in an extension state, a support rod 18 is in contact with a measuring rod 19 to block the second floater 7, and the second floater 7 is locked at the bottom of the measuring rod 19. When the measurement is started, the first electromagnetic valve 14 is opened, crude oil enters from the bottom of the measuring cylinder 1 along the oil inlet pipe 2, when the crude oil overflows the upper opening of the measuring cylinder 1, a signal is transmitted to the signal transmitter 4 through the electro-sensitive element in the measuring rod 19 by the second floater 7, the crude oil in the measuring cylinder 1 reaches and keeps constant height, overflow liquid enters the overflow cylinder 5, the first electromagnetic valve 14 is closed at the moment, standing is carried out for about 3 minutes, so that gas in the oil overflows, oil and water are quickly separated, and an interface is formed. And starting the positioning switch 11, enabling the electromagnetic valve to be electrified to retract the supporting rod 18, releasing the first floater 6, enabling the first floater 6 to automatically float to an oil-water separation interface, transmitting the position of the first floater 6 to the signal transmitter 4, and determining the ratio of the height of the first floater 6 to the fixed height of the measuring cylinder 1 to be the water content. The height setting and the water surface height measurement in the two heights are realized by magnetostrictive displacement sensors. After the measurement is completed, the second electromagnetic valve 15 is opened to drain water and drain oil, and the third electromagnetic valve 16 is opened to make the oil in the overflow cylinder 5 flow back to the oil delivery pipe 9. After complete removal, the fourth solenoid valve 17 is opened to flush the entire measuring device.
Through experimental measurement, the data obtained are shown in table 1:
table 1 moisture content device measurement test table:
can see from table 1, the utility model discloses water level interface and oil level measured value during the measurement are stable basically, and smile among them changes and has embodied the formal condition that the device measured water interface and oil interface, and the measured value is stable, and good reproducibility, the measured value is accurate, and measures fast.
The utility model discloses in dewatering device, oil water separator promptly can adopt electric field, magnetic field, intensification, ultrasonic wave etc. and this dewatering technology belongs to conventional technology in oil development, and is that the personnel in the field know, does not describe in order to give unnecessary details here. Just the utility model provides a magnetostrictive displacement sensor is current product, and its inside program control structure is here not in order to give unnecessary details.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (6)
1. The utility model provides a crude oil moisture content on-line measuring device which characterized in that: the device comprises a measuring cylinder, an oil inlet pipe, an oil outlet pipe and a magnetostrictive displacement sensor, wherein the magnetostrictive displacement sensor comprises a measuring rod and a signal transmitter at the end part of the measuring rod; the two ends of the oil inlet pipe are respectively connected with an oil delivery pipe and a measuring cylinder; the oil outlet pipe is connected to the bottom of the measuring cylinder; the upper part of the measuring cylinder is provided with an overflow cylinder, the measuring rod is inserted from the top ends of the measuring cylinder and the overflow cylinder, and the measuring rod is provided with a movable first floater and a movable second floater; the first float is below the second float; the first floater and the second floater have magnetism; the overflow cylinder is connected with an overflow pipe, and the overflow pipe is connected with the oil delivery pipe; the measuring cylinder is provided with a washing pipe, and the measuring cylinder is provided with a positioning switch.
2. The on-line measuring device for water content of crude oil according to claim 1, characterized in that: the set top box is arranged outside the signal transmitter, and a flange plate is arranged between the set top box and the top of the overflow cylinder.
3. The on-line measuring device for water content of crude oil according to claim 1, characterized in that: the oil inlet pipe, the oil outlet pipe, the overflow pipe and the flushing pipe are all provided with electromagnetic valves.
4. The on-line measuring device for water content of crude oil according to claim 1, characterized in that: the overflow cylinder wraps the measuring cylinder to form an overflow cavity, and the lower bottom surface of the overflow cylinder is an inclined surface.
5. The on-line measuring device of the water content of crude oil according to claim 4, characterized in that: the flushing pipe is arranged below the inclined plane of the overflow cylinder and communicated with the side face of the measuring cylinder.
6. The on-line measuring device for water content of crude oil according to claim 1, characterized in that: the positioning switch comprises an electromagnetic valve and a supporting rod at the end part of the electromagnetic valve, a spring is arranged between the electromagnetic valve and the supporting rod, the spring is fixedly connected with one end of the supporting rod, and the other end of the supporting rod is in contact connection with the measuring rod.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921251433.9U CN211148396U (en) | 2019-08-03 | 2019-08-03 | Online measuring device for water content of crude oil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921251433.9U CN211148396U (en) | 2019-08-03 | 2019-08-03 | Online measuring device for water content of crude oil |
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| CN211148396U true CN211148396U (en) | 2020-07-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320157A (en) * | 2019-08-03 | 2019-10-11 | 成都中核鑫星应用技术研究所 | A kind of on-line measurement device of crude oil water content |
| CN114858981A (en) * | 2022-07-06 | 2022-08-05 | 中国石油大学(华东) | Drilling complex overflow simulation and acoustoelectric coupling overflow monitoring experiment system |
-
2019
- 2019-08-03 CN CN201921251433.9U patent/CN211148396U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320157A (en) * | 2019-08-03 | 2019-10-11 | 成都中核鑫星应用技术研究所 | A kind of on-line measurement device of crude oil water content |
| CN114858981A (en) * | 2022-07-06 | 2022-08-05 | 中国石油大学(华东) | Drilling complex overflow simulation and acoustoelectric coupling overflow monitoring experiment system |
| CN114858981B (en) * | 2022-07-06 | 2022-09-09 | 中国石油大学(华东) | Drilling complex overflow simulation and acoustoelectric coupling overflow monitoring experiment system |
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